Year	Number
2004-01-01	3940
2005-01-01	5607
2006-01-01	4501
2007-01-01	3517
2008-01-01	3590
2009-01-01	3690
2010-01-01	3756
2011-01-01	8860
2012-01-01	7226
2013-01-01	7580
2014-01-01	2866